John lake barnes



(No' Mddel.)

J. L. BARNES. FEED MECHANISM FOR SAWMILLS.

No. 509,859. Patented 1m. 5, 1893.

UNITED STATES PATENT OFFICE.

JOHN LAKE BARNES, OF INDIANAPOLIS, INDIANA.

FEED MECHANISM FOR SAWMILLS.

EPEGIFIGATION forming part of Letters Patent No. 509,859, dated December5, 1893.

Application filed February 17, 1893- Serial No. 462,764. (N o model.

To all whom it may concern:

Be it known that 1, JOHN LAKE BARNES, a citizen of the United States,residing at Indianapolis, in the county of Marion and State of Indiana,have invented certain new and useful Improvements in Feed Mechanism forSawmills; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

This invention relates to feed mechanism for sawmills; and it consistsin the novel con-' struction and combination of the parts hereinafterfully described and claimed.

In the drawings: Figure 1 is a front view of the mechanism; and Fig. 2is a plan view of the same.

A is the supporting frame.

B is a central vertical shaft journaled in the bearings a; and b is abeveled toothed pinion secured on the shaft 13 and adapted to propel thesawmill carriage back and forth by means of intermediate drivingmechanism,not shown in the drawings.

0 and D are two similar shafts arranged in line with each other anddriven at the same speed, in opposite directions, as indicated by thearrows, by means of the belt pulleys c and d secured on the respectiveshafts.

E and F are combined friction-disks and friction-wheels secured on. theshafts G and D respectively.

G is a friction-wheel splined on the shaft B between the revolvingdisks, and H is a friction-disk splined on the shaft B above the wheelsE and F.

Oollars2 are secured to the projecting ends of the shafts O and D, and 3are spring interposed between the said collars and the frame, andadapted to press the two frictiondisks away from the friction-wheel G.

J and J are two lovers pivoted to the frame by the links j and j, andconnected with the hubs of the belt pulleys c and d. When the free endsof the levers are moved toward each other the frictiondisks are pressedon the friction-wheel G and cause the shaft B to revolve in onedirection.

I is a lever pivoted to the frame by the link i, and connected with thehub of the frictiondisk H. When the lever I is depressed it presses thedisk H on the wheels E and F, and the shaft Bis caused to revolve in theopposite direction. A collar h is secured to the shaft B,

and his a springinterposed between the hub of the disk H and the saidcollar and adapted to sustain the said disk H clear of the frictionwheels.

The above-described parts diifer in no material respect from the similarparts shown and described in my Patent No. 474,435, dated May 10, 1892.

K is a rock-shaft journaled in the stationary bearings k. Rods m and mpivotally connect the plate 70' which is secured upon the rock-shaft K,with the ends ofthe respective levers J and J. 1

N is a rod which connects the plate in with the end of the lever I. Therod N is pivoted in the plate between the pivoted ends of the rods m andm which are arranged upon opposite sides of the rock-shaft. M is ahandlever secured to the said plate It. When the hand-lever is moved tothe left, in Fig. 1, the combined friction-disks and friction-wheels aremoved apart, and the friction-disk H is pressed on their peripheriesthereby revolving the shaft B to effect the return movement of thecarriage. When the hand-lever is moved to the right the disk H is raisedand the driving disks are pressed simultaneously on the wheel G andrevolve it in the direction necessary to propel the carriage.

In order that the carriage may be propelled forward at different speeds,the operating hand-lever O is provided.

P is a bracket secured to the frame A, and p is a sleeve journaled onthe fulcrum pin 19 which passes through the said bracket. The sleeve 10is provided with a vertical ,pin 0 on which the lever O is pivoted. Therear end of the lever O is pivoted to a rod q, the lower end q of whichis forked and is operatively connected to the hub of the wheel G. Thewheel G is raised or lowered to change the speed of the shaft B byraising or lowering the front end of the lever O.

The sawyer grasps the lever M with one hand and the lever O with theother hand and operates them so as to run this mill to the bestadvantage.

In order that the lever 0 may at all times be convenient to the grasp ofthe sawyer while operating the lever M, the two said levers M and O arecoupled together. This is effected by simply forming a slot 0 throughthe front end of the lever O and permitting the lever M to projectthrough the said slot. The lever 0 then vibrates with the lever M in ahorizontal direction, turning on the pin 0, Without changing theposition of the Wheel G; and the handle of the lever O is alwaysretained in a convenient position and in front of the sawyer.

The lever O can be turned on the fulcrum pin 19 to change the positionof the wheel G irrespective of the position of the lever M and as oftenas required.

It will be noticed that the two speeds of the carriage remain the samewhen the wheel G is once set in an appropriate position, and that thehand-lever M is operated to merely change the direction of the motion,and that an adjustment of the parts at each cut, to produce the requiredspeed, is not necessary. Nevertheless any required change of speed inpropelling the carriage can be quickly made by means of the separatelever 0.

What I claim is 1. In a sawmill feed mechanism, the combination, withthe two driving friction-disks revolving in opposite directions, thedriven friction-wheel splined upon its shaft between the said disks, anda hand-lever and intermediate connections operating to press the saiddisks upon the said wheel; of a second handlever, for varying the speedof the feed mechanism, provided with a slot engaging with the firsthand-lever whereby the said hand-levers are retained in proximity toeach other, and intermediate operating devices connecting the saidsecond lever with the driven friction- Wheel.

2. In a sawmill feed mechanism, the combination, with the central shaftand the frictionwheel splined thereon, a hand-lever, a vertical pivotpin passing through the said lever and permitting it to be swunghorizontally, operating devices connecting the said lever with the saidfriction-wheel, and a horizontally-arranged fulcrum pin supporting thesaid lever V and its vertical pivot pin and permitting the said lever tobe moved vertically to slide the said friction-wheel on its shaft; ofthe two driving friction-disks revolving in oppoite directions, avertical hand-lever passing through a slot in the aforesaid hand-lever,and intermediate connections between the said vertical hand-lever anddriving disks, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN LAKE BARNES.

Witnesses:

JAMES A. WALSH, FRANK W. WARNER.

